Work supporting attachment for abrading machines



July 19, 1932. E. WOODSEND 1,858,266

WORK SUPPORTING ATTACHMEN T FOR ABRADING MACHINES Filed March 6, 1929 aSheets-Sheet 1 Jae/Mow Z, eJ/x L. 7755/36/70 3 Sheets-Sheet 2 July 19,1932. E.- WOODSEND WORK SUPPORTING ATTACHMENT FOR ABRADING MACHINES Filed March 6, 1929 fave/7601" Les/1e L. h oodse/m min n a 4 6 m a 2 mm xw 3 x y 1932- E. WOODSEND 1,868,266

WORK SUPPORTING ATTACHMENT FOR ABRADING MACHINES Filed March 6, 1929 3Sheets-Sheet 3 fjuhlr6 v Les/A L 5 9002135770 I jetty/my Patented July19,1932

UNITED STATES LESLIE n. woonsnn'n, or Los 'ANGELE'S, CALIFORNIA wonxsurronfiue-nrraonmtmr ron aBRAnIne MACHINES Applicati on filed March '6,

My invention relates to and hasfor a purpose the provision of a worksupporting attachment for abrading machines particularly adapted,although not necessarily for use 1n the sharpening of the rotary cutterof afcon ventional meat grinding machine and the facing of theperforated disk or plate which confronts the rotary cutter in such amachine; my attachment being characterized by its capability ofsupporting and guiding these parts with respect to an abrading elementsuch as a grinding wheel of a conventional grinding machine, in a mannerto insure such accurate grinding of the cutter and disk that they willhave maximum cutting co-actlon when in use.

I will describeonly oneform of work sup- I V r pflses a cutter holderdesignated generally at" I and including a bodyf'12 in theform'. of aporting attachment for abrading machines embodying my invention and willthen point out the novel features thereof in claims.

In the accompanying drawings,

Fig. 1 is a View showing in side elevation a conventional abradingmachine with one form of work supporting attachment embodying myinvention associated therewith for the sharpening ofthe blades of arotary cutter as used in certain meat grinding Inachines. V j

Fig. 2 is a view in end elevation partly broken away of the abradingmachine and attachment shown in Fig.1, I

Fig. 3 is a plan view partly broken away, of the attachment shown in thepreceding figures, and inconjunction with a portion of the abradingmachine. 7

Fig. 4 is a view in plan of a portion of a conventional abrading machinewith the attachment embodying my invention as used in supporting andguiding the perforated disk or plate ofaconventional meat grindingmachine for facing of the disk, and

Fig. 5 is a view in end elevation of the abrading machine and theattachment shown in Fig. 4. b l

Referring specifically to the'drawings in which similar referencecharactersdesignate similar parts in each of the several-yiews, andparticularly to Figs. 1 to 3 incli1'sive,my invention in its present.embodiment. com;

1929. Serial No; 344,766.

prises abaseiB preferably constructedof'j metal and of rectangular.outline, to which is secured by bolts 10, a suitable power unit inv theform .of an electric motor M, the shaft 11 of which projectshorizontally therefrom and hasdetachably secured thereto in any suitablemanner anabrading element prefer ably in the form of a grinding wheel W,so that when the motor isin operation, the wheel will be rotated at, ahigh speed to effect grind- 5 ing of any work brought into contacttherewith. The motor andgrindingwheel constitute a conventional form ofabrading'mas chine, and the base B provides a common sup;

attachment to be presently described.

port thereforand for thelw'ork supporting The work. supportingattachment com ported ;:and a flat head 19 against which the cutter isadapted to. abut for clamp ingbetween the head andbodyby means a nut 20on the shank 15. H

. The conventional cutter C illustrated and used in certain types ofmeat grinding machines is in the form of a metal spider having fourequallyspaced radial arms "constituting cutter blades 21 which areprovided with cutting'edges 22 extending lengthwise of the blades anddisposed inone and'the' sameplane for co-action with the perforatedmetaldisk or plate illustrated in Figs. "4 and 5, inefl'ecting a cuttingofmeat as forced through the perforated plate, all of which 5willbeunderstood those familiar withthe art. This' cutterC isprovidedwitha square axially; disposed opening in which the non? circularportion 18 also illustratedfasbeing f square, iS,adaptedto' fit tosupport the eras;

on the stud 16 against rotation. The cutter is also recessed axially onits outer face to receive the head 19 of the'stud so that the head isflush with the outer face of the cutter.

be clamped in a fixed position on the body with one of its cutterbladesg21 projecting laterally from one side of thebody'as'shown 7 in Fi3 for sharpening of its cutting edg 2:2 by the abrading wheel W; v

It will be clear that the position of the cutter circumferentially withrespect to the 'stu d-.1 6 or the position of the stud circumferentiallywith respect to the body12'can'be changed to dispose any one of thefour: cut-' tingblades of the cutter in asingle predetermined positionfor "sharpening, due to the provision. of the squared portions 17 and'18 of the stud and the co-act'ing square socket 1 3 and square axialopening inthe cutter respectively, permitting the cutter to bead,

justed circumferentially to occupy any one of four positionsupon'looseningof the nut 20 sufiiciently to permit partial withdrawal ofV the stud 16 from the body 12.

The cutter? holder H is adapted to'be mounted for such movement thatacutting blade 22 of theicutter' carried bythe holder can: bepresentedtothe abrading wheel in a manner to effectsharpening of theblades V cutting edge, andto this endI providein theijpresent' instancea'projection 24 on the base B having a cylindrical bore 25 there'- r 7through extending parallel to the'axis of the shaft- 11;and in thebore25 is journaled for rocking movement andfor" sliding movementlongitudinally of the bore, "a cylindrical extension 26 projectinglaterally from and at rightangles to an arm 27l1aving a squared 1portion 28 freely extending through a correspondingly shapedbore 29formed in the body 12, tothus support the cutter holder.

' in the form of a bar disposed in the path of. swinging movemeutof thearm '27 in for sliding movement on the arm. To secure the holder afixedpo'sition on the arm a clamping screw 30 isthreaded into the body112 and-bears against afiat surface of'the ,squared portio 25;;

In the operation of the attachment thus far described,- let it beassumed that the 'motor M is in-operation and the cutter holder H with acutter C secured thereto is secured in the fixed position on the-arm 27as shown in'Fig 2. As the, bore 25 is parallel to the axis of theshaftll and the cutter C is supportedby the 'holderHwith its cuttingbladesQl dis-.

' posed in a single'plan'e' also parallel to the the holder is graspedandthe arm 27gswung towards the wheel W, the particular cutting;blade'21 ofthe-cutterlC occupying. the pre determined position abovereferred towill be: presented flatwise to the: peripheral sue,

axisof theshaft 11,. itwill be clear that-as face of the wheel and willextend transversely of the peripheral surface. With a cutter blade heldin contact with the wheel W the blade is caused to move longitudinallyback and fforth across the peripheral surface of the wheel, by shiftingthe arm 27 laterally in opposite directions to cause the extension 26'to slide longitudinally back and forth in the bore 25 so that thecutting edge 22 of the blade will be uniformly sharpened throughout its,length." Each of the four ,ciitterbladesgl' is sharpened in the samemanner, it only being necessary each time another blade is to besharpened, to adpist the'position of the cutter C circumferential- 9 lyin the'hold e r H to successively disposeeach blade i'n the singlepredetermined position for sharpening. It will be noted that'the body'12 is provided with a square projection 31' adapted to fit into theaxial opening of the cutter C to fixedly support the latter in any oneoffour positions circumferentially soithat the blades 21 of the cutter canbe presented edgewise to the peripheral surface of the 'wheel l V' asshown in broken lines in Fig. 3', for the removal of any feather edgeremaining on the blades after sharpening.

In order to-insure that the cutting edges :32 of fall the blades 21 willbe disposed in one and the same plane when the blades have beensharpened, I provide a means'for limiting the swinging movement of thearm 27 in presenting a 'cutter blade to the wheel VVfor sharpening. Inthe present instance this.

means comprises a post32 having a squared lower end 33 removably fittedin a similarly shaped socket 34 formed in a boss 35 projecting upwardlyfrom the base 13 {the post being "secured against displacement byvmeans. of a set screw 36 threaded into theboss and'bearing against thesquared end 33 of thep'os't. The post isprovided adjacent its upper endwith a transverse'opening 37 of square *cross-section in, which isslidably mounted 'a square shank 3 8' of, an abutment presenting acutjter blade to the wheel WV, and extendinglengthwise 1n a direct onparallel to the axis of the'shaft 11.171 0 secure the: abutment 39in afixed position of adjustment onlthe post, a set screw 40 is threadedinto the latter and bears against the shank 3 8. g

' It will be clear that the abutment limit-s the movement of the arm 27in presenting acutting blade to the wheel, to-a definite position sowhen all the cutter blades 21 have diskc23'previously referredto. 1

It will be noted that by changing the positi'on of:the cutterholder 1-1along the length offthe. arm "27, i the positions verticallyjat whichthe cutter blades 21 will be presented to the peripheral surface of thewheel W will accordingly Vary so that thecutting edges of the bladeswhen sharpened, will be relieved to a greater or less extent. As

the amount of relief required for cutters of different diameters varies,it will be clear that this condition is compensated for by theadjustability of the holder on the arm; and to indicate position thatthe holder should occupy along the arm to obtain the amount of reliefrequired for the particular size cutter to be sharpened, the squaredportion 28 of the arm is preferably scored at predetermined intervalsalong its length as indicated at 41 for co-action with the body 12 indetermining the proper position of the holder for each size cutter. Theadjustability of the shank 38 in the post 32 permits the position of theabutment 39 to be varied to compensate for variations in the position ofthe holder H along the arm 27.

Referring now to Figs. 4 and 5, I have herein shown the manner in whichmy attachment is used for the facing or grinding perfectly flat of theside face of the perforated disk 23 which confronts the cutter G in theuse of these parts in a conventional meat grinding machine. The holder His removed from the arm 27, and for the holder is substituted a holder Hwhich comprises a bracket 42 having at one end a split clamping head 48slidably receiving the arm 27 and adapted to be clamped to the latter bya co-ac-ting' threaded stud 44 and a nut 45. The opposite end of thebracket is provided with an arbor 46 of cylindrical form, which in theapplied position of the holder H to the arm 27 as shown in Fig. 1extends lengthwise in aplane parallel to the axis of the shaft 11.

The conventional disk 28 is provided with a central hub 24 havingtherethrough an axial bore 45 receiving the arbor 46 to support.

the disk on the holder H in parallelism with the outer side surface ofthe wheel W so that by simultaneously rocking the arm 27 about its axisand pressing the disk against the wheel WV, the side of the diskconfronting the wheel will be ground perfectly fiat and true. Ingrinding the disk, the post 32 with the abutment 39 are removed so asnot to interfere with the swinging movement of the arm 27. When theabrading machine is to be used for other purposes, the arm 27 can beremoved from the base B by withdrawing its extension 26 from the bore 29so that the abrading machine will be entirely unobstructed by myattachment.

Although I have herein shown and described only one form of Worksupporting attachment for abradin machines embodying my invention, it isto be understood that various changes and modifications may be madetherein without departing from the spirit of the invention and thespirit and. scope of the appended claims. 1

I claim:

1. An attachment of the character idescribed comprising a body havingnon-circular socket, a cutter supporting stud having a"non-circularpo'rtion on which a cutter isadapted tobemounted and a head againstwhich the cutter is adapted to abut, the stud having asecond'non-circular portion fitting said socket, means for securing thestud to the body with a cutter on the stud clamped between the' head ofthe stud and the body, and means for mounting the body for such movementwith respect'to an abrading element that a cutter carried by the bodycan be presented to the abrading element in a manner toeffect'sharpeningoft-he cutter blades cutting edge. 7 g a 2. In agrinding machinehavi-nga rotary abrading wheel. an attachment therefor c'onr prisingabody having non-circular socket, a cutter supporting studhaving anon-circular portion on which a cutter is adapted to be mounted andahead against which the cutter is adapted to abut, the stud having asecond non-circular portion fitting said socketymeans for securing thestud to the body with acutter on the stud clamped between the-head ofthe stud and the body, and means for mounting the body for such moveacutter carried by the body canbe presented to the abradingelement 'in'amanner to ef-- fect sharpening of the cutter blades cutting edge, saidmeans comprising aniarm on which i the body isjsu'pported, having alaterally projectingcylindrical portion, and means for mounting thecylindrical portion ofthe arm for rocking movement about an axisparallel to the axis ofthe abrading wheel and sliding movement in the.directionof its length, and means for definitely limiting the rockingmovement of the arm towards the abrading socket, a cutter supportingstud having a non-circular portion onwhich a cutter is 'adapted tobemounted and a head against,

which the cutter is'adapted'tofabut, the stud havinga secondnon-circular portionfitting said socket, means'for'securing the stud tothe body with a cutter'on the stud clamped between the head of the studand the body,

and'm'eans for mounting the body for such I movement with respect to theabrading wheel thata cutter carried by the body can be presented tothe'abrading element in a manner to eifect sharpening of the cutterblades cutting edge, said means comprising an arm of non-circular crosssection-on-which the body is slidably mounted,means for fixedlysecuringthebody tothe arm against sliding movement with respect totheabr'adingwheel that 9 Jen 4 o r I V 7 1,868,266

the cylindrical portion of the arm forfrocking movement about an axisparallel to the axis of theabrading wheel and sliding movement in thedirection of its'length, and means for definitely limiting the rockingmovement of the arm towards the abrading wheel;

et. An attachment of the character describedcomprisinga body havingnon-circular socket, acutter supporting stud having anoncircularrportion on which a cutter is adapted to be mounted and ahead against which the cutter is adapted to abut, the stud having asecond non-circular portion fitting said socket. and ajthreaded shankextending through the body, a'nut threaded on the stud 'for 00- actionwith the head of the stud in clamping o a cutter on the stud between thehead and body, andvmeans for mounting the body for such movementwithrespect to an abrading element that a cutter carried by the body can bepresented to the abrading element inva manner to'e'flectsharpeninge'ofthe cutter blades cutting" edge 5,111 an attachment of the characterdescribed,facutterholdercomprising a body having a; non-circularsocket,a cutter sup- ,porting stud having a non-circular portion on which acutter is adapted to be mounted V and a head against which the cutter isadapt ed to abut, the stud having a second non-cir- 'cularportionfitting said socket, and'means for securing the stud to the bodywith a cutter on the'stud clamped between the head;

o 3* ot the stud and the body.

6.'In an attachment of the character described, a cutterholdercomprising a'body having a non-circular socket, a cutter supporting studhaving anon-circular portion on which a cutter is-adapted to be mountedand ahead 'against'whichthe cutter is adapt V V ed to abut, the studhaving'a second 11on-eir-' cu'l'ar portion fitting said socket and athread- 7 ed shank extending through the body, and :a nut threaded onthe shank for-clamping a cutter on the stud between the head of [thestud and the'body. I v

7-.- In an attachment ofthe character described, a. cutter holdercomprising a body having a non-circular socket, a cutter support- I ingstud having'a non-circular portion on which a cutter is adapted'to bemounted and a head against which the cutter'is adaptedto Y abut, thestud having a second non-circular portion fitting saids'ock'ehand meansfor securing the stud to the body with a cutter on" the studclampedbetween the head of the stud and the body, the body, havinganon-circular 7 projection on which the cutter is adaptedto V bemounted. v I 1 I j LESLIE E. W OODS EN Dr

